Sun Oracle Netra SPARC T3-1B, Service Manual

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70 SPARC T3-1B Server Module Service Manual • July 2012
The following server module features independently manage memory faults:
■
POST – Based on Oracle ILOM configuration variables, POST runs when the
server module is powered on.
For correctable memory errors (sometimes called CEs), POST forwards the error to
the Oracle Solaris PSH daemon for error handling.
If an uncorrectable memory fault is detected, POST displays the fault with the
device name of the faulty DIMMs, and logs the fault. POST then disables the
faulty DIMMs. Depending on the memory configuration and the location of the
faulty DIMM, POST disables half of physical memory in the system, or half the
physical memory and half the processor threads. When the offlining process
occurs in normal operation, you must replace the faulty DIMMs based on the fault
message and then enable the disabled DIMMs. See
“Clear the Fault and Verify the
Functionality of the Replacement DIMM” on page 75 .
■
Oracle Solaris PSH technology – A feature of the Solaris OS, PSH uses the fault
manager daemon (
fmd
) to watch for various kinds of faults. When a fault occurs,
the fault is assigned a UUID and logged. PSH reports the fault and suggests a
replacement for the DIMMs associated with the fault.
If you suspect that the server module has a memory problem, follow the
“Diagnostics Process” on page 7 . The flowchart helps you determine if the memory
problem was detected by POST or by the PSH technology.
Once you identify which DIMMs you want to replace, see “Locate a Faulty DIMM
(LEDs)” on page 70 . After replacing a faulty DIMM, You must perform the
instructions in “Clear the Fault and Verify the Functionality of the Replacement
DIMM” on page 75 .
Related Information
■
“Locate a Faulty DIMM (LEDs)” on page 70
■
“Clear the Fault and Verify the Functionality of the Replacement DIMM” on
page 75
■
“Clear the Fault and Verify the Functionality of the Replacement DIMM” on
page 75
■
“Detecting and Managing Faults” on page 5
▼
Locate a Faulty DIMM (LEDs)
This procedure describes how to use the DIMM LEDs on the motherboard to
pinpoint the physical location of a faulty DIMM.